IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Almgjotheii, Flatestøl, Lund, Rogaland, Norway

This page is currently not sponsored. Click here to sponsor this page.
 
Latitude & Longitude (WGS84): 58° 32' 59'' North , 6° 31' 0'' East
Latitude & Longitude (decimal): 58.55, 6.51666666667
Name(s) in local language(s):Almgjotheii (Almjotheia), Flatestøl, Lund kommune, Rogaland fylke, Norge
Other regions containing this locality:Scandinavia


A grandidierite-boralsilite bearing abyssal pegmatite in the Rogaland anorthosite complex intruded in high-grade granulites located about 2 km N of Moi. It occurs as a discordant, nearly vertical vein 10 m long and 10 cm wide hosted in pelitic rocks (gneises containing garnet, cordierite spinel, sillimanite) resulting from metamorphism under granulite-facies condition (Grew et al. 1998).

The host rocks:
Almandine migmatites (partially melted metapelites) within granulites at the contact of intrusive anorthosites (Bjerkrem-Sokndal layered lopolith) show hercynite-quartz and osumilite high-grade assemblages (750 °C-4 kb, up to 1050 °C at the anorthosite contact).

Mineral List


17 valid minerals. 1 (TL) - type locality of valid minerals.

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Huijsmans, J.P.P., Barton, M. & van Bergen, M.J. (1982): A pegmatite containing Fe-rich grandidierite, Ti-richdumortierite and tourmaline from the Precambrian, high-grade metamorphic complex of Rogaland, S-W.Norway. Neues Jahrbuch für Mineralogie, Abhandlungen 133 (3): 249-261

Waters, D. J. (1991): Hercynite-quartz granulites; phase relations, and implications for crustal processes. European Journal of Mineralogy 3: 367-386.

Grew, E.S., McGee, J.J., Yates, M.G., Peacor, D.R., Rouse, R.C., Huijsmans, J.P.P., Shearer, C.K., Wiedenbeck, M., Thost, D.E., and Su, S.-C. (1998): Boralsilite (Al16B6Si2O37): A new mineral related to sillimanite from pegmatites in granulite-facies rocks. American Mineralogist: 83: 638-651.

Grew, E. S.; Yates, M. G. ; Huijsmans, J. P. P. ; McGee, J. J.; Shearer, C. K.; Wiedenbeck, M. & Rouse, R. C. (1998): Werdingite, a borosilicate new to granitic pegmatites, The Canadian Mineralogist 36, 399-414.

Kristiansen, R. (2000): Nytt om mineraler. Borasilite-Al16B6Si2O37- et nytt mineral fra Antarktis og Norge! Stein 27 (1): 33.

Kristiansen, R. (2012): Almgjotheii-en sjelden borosilikatpegmatitt i Rogaland. Norsk Bergverksmuseum Skrifter. 49, 81-92

External Links


Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 22, 2018 11:13:00 Page generated: August 21, 2017 18:05:52
Go to top of page